Beta 1.9.10 Install extension in userdata problem

[RedAdder]

I have 1.9.10 and downloaded the extension(campaign) "To Lands unknown".
Starting it fails, and after the failure it doesn't appear anymore in the installed campaigns list.

The issue seems to be that wesnoth is configured to store addons in user data, which on my german windows 2000 system has an Umlaut in the user name, that is an ä,ö or ü. Other common german characters include ß(sharp s).

Creating the cache gives no errors, but the error message says that the addon has errors and could not be loaded.

The problem does not seem to affect other campaigns that have been downloaded/installed with previous versions of Wesnoth.

[Alarantalara]

Have you also downloaded Era of Magic? That campaign requires that era in order to work.

[RedAdder]

Well, I didn't, but now I did and the error message persists, and in the error message the path to the addon is truncated at the Umlaut(a non 127-bit ascii character).

[averyimaginativename]

It strikes me as odd that the Umlaut is the problem if other add-ons work, but you could try launching wesnoth with the switch -config-dir /path/to/userdatadir/ to set an alternative user data folder if that is the cause.

Likely somebody else will have a better idea though.

[RedAdder]

I downloaded the swamplings campaign and it works just fine.

A wild guess: Maybe the problem is in some code in the "To lands unknown" campaign that tries to load era of magic?

I now changed the data dir to one without an Umlaut, it seems the addon gets loaded now, now I get a different error message, about the macro AMLA_EXPERIENCE missing. I guess the latter is a known migration problem?

[sur.nhm]

Yes. Get the latest version of EoMa / TLU, and the problem should go away. If you have any problems with the era or the campaign (not general BfW, specific to either of these) you should post at their respective threads, as it makes sure that their creator / maintainer / hangers-on will notice.

[RedAdder]

The issue seems to be gone in 1.9.13
I was able to load two addon-campaigns, one with a dependency, just fine.